Shelf support



FIG. 1 is a front, top and right side perspective view of a shelf support showing my new design;

FIGS. 2 and 3 are respectively front and right side elevational views thereof, the left side elevational view being a mirror image;

FIGS. 4 and 5 are respectively top and bottom plan views thereof; and

FIG. 6 is a bottom plan view thereof.

The broken line showing of a shelf portion in FIG. 3 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a shelf support, as shown and described. 